Recent content by aquamarine08

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    Solve Vectors Question: Catch Friend in 5 Min on Interstate 83

    alright, thanks
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    Solve Vectors Question: Catch Friend in 5 Min on Interstate 83

    Homework Statement While driving on the interstate 83, you notice a friend half a mile in front of you. Assuming your friend is driving at the legal 65 miles per hour, determine how fast you would have to travel (with respect to land) to catch him in 5 minutes. Homework Equations...
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    Logarithms and Exponents Question

    yep...i got it ! thanks everyone for ur help!
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    Logarithms and Exponents Question

    [SOLVED] Logarithms and Exponents Question Homework Statement 5^{x}=41 The attempt at a solution Well, I know that one way to figure this out would be that to find a common base for both sides of the equation and then use the known exponent to find the variable. The only thing...
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    Solve Machines Problem: Ramp 18m Long & 4.5m High

    ok thanks so much! :D
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    Solve Machines Problem: Ramp 18m Long & 4.5m High

    o, I am sorry, I have to find the IMA and MA... (ideal mechanical advantage and mechanical advantage).
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    Solve Machines Problem: Ramp 18m Long & 4.5m High

    [SOLVED] Machines Problem Homework Statement A ramp, 18m long and 4.5m high is set up in order to wheel a 25-kg box at a constant speed. Assume that by wheeling it there is no friction. Homework Equations IMA= \frac{d_{in}}{d_{out}} The Attempt at a Solution I know this is a...
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    Calculating Energy Usage of a Hair Dryer

    ok thanks...i got part a! now I am just workin on b...
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    Calculating Energy Usage of a Hair Dryer

    [SOLVED] Power problem! Homework Statement (a) How many joules of electrical energy are used by a 1650-W hair dryer in 10 min? (b) If the dryer is operated a total of 4.5 h during one month, how much will this contribute to the electrical bill if the billing rate is 12 cents/kWh...
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    Problem about the Conservation of Energy

    thanks everyone for your help! i got the right answer! :)
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    Problem about the Conservation of Energy

    :smile: ok thanks so much for your help!
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    Problem about the Conservation of Energy

    Im not sure how to figure that out...don't I need the mass of the ball to figure out the potential energy because of this equation U=mgh? :confused:
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    Problem about the Conservation of Energy

    [SOLVED] Problem about the Conservation of Energy Homework Statement When a certain rubber ball is dropped from a height of 1.25m onto a hard surface, it loses 18% of its mechanical energy on each bounce. (a) How high will the ball bounce on the first bounce? (b) How high will it bounce on...
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    Another work-energy theorem problem

    alright...thanks a lot for all your help! :)
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    Another work-energy theorem problem

    sorry for being so annoying... what i understood from your last post was that since F and m are constant, they don't have to included in the equation so after solving the ratio... \frac{2F}{m} = \frac{\Deltav^{2}}{d} \frac{2} = \frac{-90^{2}}{d} 2= \frac{-8100}{d} -4050 km= d...